Alexander Marra
20Patents
8h-index
16Co-inventors
72Inventor score
Filing activity: Dec 13, 1994 → Sep 15, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5799010A | Code division multiple access (CDMA) communication system | Emerging Cross-Sectional Technologies | 171 | Expired |
| US6215778A | Bearer channel modification system for a code division multiple access (CDMA) communication system | Emerging Cross-Sectional Technologies | 101 | Expired |
| US6212174A | Capacity management method for a code division multiple access (CDM) communication system | Emerging Cross-Sectional Technologies | 47 | Expired |
| US6801516B1 | Spread-spectrum system for assigning information signals having different data rates | Electricity | 41 | Expired |
| US6985467B2 | Rapid acquisition spreading codes for spread-spectrum communications | Emerging Cross-Sectional Technologies | 37 | Expired |
| US6831905B1 | Spread spectrum system assigning information signals to message-code signals | Electricity | 26 | Expired |
| US6122353A | Method and apparatus for detecting a telephone CPE alerting signal | Electricity | 24 | Expired |
| US5649002A | Method and apparatus for detecting a telephone CPE alerting signal | Electricity | 22 | Expired |
| US9883046B1 | Retrofit digital network speaker system | Electricity | 5 | Active |
| US10491751B2 | Retrofit digital network speaker system | Electricity | 3 | Active |
| US8619950B1 | Video and digital audio transport | Electricity | 2 | Active |
| US10834512B1 | System for calibration of a speakerphone system utilizing a separate calibration device | Electricity | 0 | Active |
| US10832651B1 | Method for use with a speakerphone system that corrects for mechanical vibrations | Physics | 0 | Active |
| US11006207B2 | Method for use with a speakerphone system that corrects for mechanical vibrations | Electricity | 0 | Active |
| US9549256B2 | Speaker protection for surround sound systems | Electricity | 0 | Active |
| US10832650B1 | Speakerphone system that corrects for mechanical vibrations on an enclosure of the speakerphone using an output of a mechanical vibration sensor and an output of a microphone | Electricity | 0 | Active |
| US11158300B2 | Speakerphone system that corrects for mechanical vibrations on an enclosure of the speakerphone using an output of a mechanical vibration sensor and an output of a microphone generated by acoustic signals and mechanical vibrations | Electricity | 0 | Active |
| US11962981B2 | Multi-voice conferencing device soundbar test system and method | Electricity | 0 | Active |
| US10834513B1 | Method for use of a calibration system for calibration of a speakerphone system utilizing a separate calibration device | Electricity | 0 | Active |
| US10686943B2 | Retrofit digital network speaker system | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.